Mitreolaquanruii (Loganiaceae), a new species from a karst region in Guangxi, China

Renchuan Hu; Xiaowen Liao; Binsheng Luo; Cheng Liu; You Nong; Lei Wu

doi:10.3897/phytokeys.232.108986

Mitreolaquanruii (Loganiaceae), a new species from a karst region in Guangxi, China

PhytoKeys. 2023 Sep 8:232:67-75. doi: 10.3897/phytokeys.232.108986. eCollection 2023.

Authors

Renchuan Hu¹, Xiaowen Liao², Binsheng Luo³, Cheng Liu⁴, You Nong¹, Lei Wu²

Affiliations

¹ Guangxi Key Laboratory of Traditional Chinese Medicine Quality Standards, Guangxi Institute of Chinese Medicine and Pharmaceutical Science, Nanning 530022, China Guangxi Institute of Chinese Medicine and Pharmaceutical Science Nanning China.
² College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China Central South University of Forestry and Technology Changsha China.
³ Lushan Botanical Garden, Jiangxi Province and Chinese Academy of Sciences, Lushan 332900, China Lushan Botanical Garden, Jiangxi Province and Chinese Academy of Sciences Lushan China.
⁴ CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China Kunming Institute of Botany, Chinese Academy of Sciences Kunming China.

Abstract

Mitreolaquanruii, a new species from Guangxi, China, is described and illustrated in this study. It is morphologically similar to M.liuyanii because of the terete stems, creeping and branched at the base, the leaves which are pilose on both surfaces and the bilobed capsules with two erect horns. The new species can be distinguished from M.liuyanii by its taller habit, up to 20-50 cm tall, its linear leaves, 4-18 × 0.3-1 cm with acuminate apex and 8-10 pairs of lateral veins, its narrowly triangular stipules, its linear bracts, ca. 1.0 cm long and glabrous and its glabrous calyx. Mitreolaquanruii is temporarily assessed as data deficient (DD) according to IUCN. The habitat of Mitreolaquanruii is extremely fragile. Therefore, this species deserves close attention and protection.

Keywords: China; Loganiaceae; Mitreola; new taxon; taxonomy.

Renchuan Hu, Xiaowen Liao, Binsheng Luo, Cheng Liu, You Nong, Lei Wu.

Grants and funding

the National Natural Science Foundation of China (32000264), the Scientific Research Project of Education Department of Hunan Province (grant. no. 18B178), the Survey and Collection of Germplasm Resources of Woody & Herbaceous Plants in Guangxi, China (GXFS-2021-34), and the Ethnobotany Study of Baikuyao in Nandan, Guangxi (2018GXNSFBA281162)